#mask {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 10vh;
  background: #fff;
  z-index: 9999999;
  display: none;
}
.maskContent {
  width: 40vw;
  height: 350px;
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  margin: auto;
  background: #fff;
}
.center{
  width: 80vw;
  margin: 0 auto;
}
.center .containerHeader {
  width: 80vw;
  display: flex;
  flex-wrap: nowrap;
  align-items: center;
  justify-content: space-between;
}

#commonHeader{
  display: flex;
  flex-flow: column;
}